Burner.



PATBNTBD JAN. 1, 1907.

J. H. AGKROYD.-

BURNER.

APPLICATION FILED DBO. 23, 1904.

2 SEE-ETS-SHEET 1.

PATENTED JAN. 1, 1907. J. H. AGKROYD.

BURNER.

APPLIOATION FILED DBO. 2a, 1904.

2 SHEETS-SHEET 2.

I To alllwhom iii may concern: v Beit known thatl, Joan H. Aonnorn, a

borough or Parana onnr on.

JOHN n. ACKROYD, on NEW YORK, N. Y.

' BURNER.

citizen of the United-States, residing in the Manhattan, in the county of New York'and State of New York, have invented a new and usehillmprovement in Burners,

, of which-the following is a specification.

The present improvements are applicable to various" u oses in the' arts-such' for instance, as heaters for atmospheric warming, otrens iurnaces'stoves for cooking, and other purposes, &c.- and are peculiarly adapted for uses which ahigh flame temperature in concentrated form is necessary or desirable. The object of my invention to provide 'means inagas burner for producing complete combustion of the gas and means'for effecting directftransmission of the heat to a bodyto be 116mm,;

The mainfeaturesof this invention lie,

therefore, in-the particular means which are lat er. reachesfthe orifices .such oxygenated gas 2 pingcment of air'agains't the employed t'o'supply that quantity of atmospheric air and that quantity .only which is required to f furnish the proper amount, of oxygen for complete combustion of the gas and at the same time to collect the hot products of combustion free from an excess of atmospheric'air and deliver. the same directly in contactwith abody to be heated.

The question'of direct transmission of the heat is oi' no less importance than that of completecombustion of the gas, and anyexcess of atmospheric air which is allowed to become mixed with the hot products of con1- bustion-means indirect transmission or so much loss in that such air rapidly absorbs i the heat and begins to expand, carrying away heat which would otherwise be transmitted directly to the body to be heated. Such results I accom lish by providing means whereby the in uctive force of the gas may be utilized to oxygena'te the gasbefore the l v at which it is burned, according to the well-known Bunsen principle, and means whereby the inductive force of a number of separate flames fed by may be utilized to induce a supply of air to flow in contact with all surfaces of each separate flame. The second induction orf that resulting in the imburning jets results from the passage of the flames through restricted openings in a plate located above the burner-orifices.

Specification of Letters Patent.

dpplicntion filed December 23. 1.904 Serial Nu. 238.056.

merits.

Patented J an. 1, 1907.

only necessary to efiect'con'iplete cdmbus- .ilOIl of the gas and for excluding allextraneous atmospheric air from combination and association with the hot products of combustion While the latter are in contact with a body being heated, thereb; efi'ecting direct transmission of the heat.

These features, together with others coth stituting the present invention, are set fornin the drawings, in which Figure 1 is an elevation of a multiple outlet-burner embodyin the present improve Fig.2 is a p an View thereof. Fig. 3 is a longitudinal section, the plane of the section being defined by. the axis of the burner-body and the longitudinal axis of one of the elongated orifices. elevation,- part being broken away, of that form of the invention in which the latter is adapted to the purpose of an atmospheric heater, the valve controlling the outlet from a construction in which't-he burner of Figs.

1, 2, and 3 is ap lied to a stove having an inclosed casing esigned to prevent atmospheric air from becoming mixed with the hot products of'cornbustion while the latter are in contact with the body being heated.

Similar characters of reference designate corresponding arts in all figures.

The burners ody 2 chosen for illustration in Figs. '1, 2, 3, 4, and 7 is conical in form,

having' a top cover-plate 2" and provided with a tubular extension 3. Openings 4 permit theinflow of 'airi, Gas is fed through an inlet 6, (for the attachment of a flexible gas connection, if desired.) extending fr%n1 a rom support, such as 5 in Fi s. 1 and 3. port 7 the gas is idelwere to the tubular: extension and assing upward therethrough inducespan in ow of air in the well-known manner, the mixture passing to the mixingcharnber and issuing through a plurality of top cover-plate?" Immediately abov'e eaelr burner-orifice is a restricted opening for the passage of the flame or jet. Each such 0 ening is somewhat wider and longer than t e corres ionding dimension of each burner orifice an registers therewith, being there- .t-fiQlepot'tthe sameconfiguration as, but $011165 What larger in area, than the eorrespondin humer-orifice These openin s are formed by elongated apertures in a plate 11. The passage time provided between all surfaces of each ame and the edges of each opening-l0 for the upward movement of air' is of unifornr width, containing the additional oxygen necessary for combustion; The plate 1.1 is spaced somewhat above the top cover plate 2 by a central boss 13, attached to the top-plate 2- but preferably at a point such that the upper plane of the l)l i XlCI-()Ilfi('t is below the lower plane of the late 11. A

s ace is-thus left open iorf'the in ow of ltlllll0S erio air betweep the hfiwer'surfam of the plate 11 and the -uppersurtace. of the top cover-plate 2, and t is inflow results from the inductiveaction: of the burning jet or jets in passing through the openings 10, causmg a sheet of air toimpinge against the oppositie faces of each jet. This space constitutes a preheating-chamber'for the inflowing air, being located as it; is between the )late' 11 and theto cover-plate-Q, both ofw lioh be-' come high y heater v In! Figs. 1', 2, 3, 4, an(l 7 plate-1 1 and the top'cover-plate 2 aresec-ured to-the burnerbody by a bolt 12, which passes centrally throu h the plate 11' and the topcover-plat-e 2' an through across-piece or s ider 14 within the burner-body. Mounts] in. this mannar that is, the point of attachment of the plate- 1=1- being at tho--central portionthereofi-leaves the outer portions of 6 e plate free to expand and "contract with changes of temperature; The induction of air through the restricted openings 10 in the plateli'l may be increased by providing an expansion-chamber .16; Fig. 4, above theplate; having inlet communication at its Owen end with theflame-openings 1.0- and htwing'anl out-let 17' at its upper endl Theflames passing through the openings 10 and? i into chamher 1 6 operate torapidly heat and displace theair contained in the chamber, an all the-airt husdisplaeed from the champen is re laced. by the' produots of combustiom Ti erapid expansion and consequent displacement; of the products of combustion from the chamber 1*6 causes a draftoi out sigilaai'r to. rgsh through. the openings 10 be--' left for-the escape of the products ofcombus surfaces of the flames, and the velocity of flow of this air through theopenings 10 is governed by the size of the chamber 16 and the size of the outlet 17. This air, however, is not permitted to reach the chamber 16 and bustion without giving up its oxygen to the .flame, so that the chamber 16 contains only the hot productsof oonibustionireefrom at- 1nospherio air. Such a constructionthat is, one with a chamber, as described-may be used advantageously as an atmospheric heater, water-heater, oven, furnaeeg &c:, as

by this means a veryhigh tempera are may be produced iirthe chamber, or about five times as great a temperatureas is reduced in the ehai'nberof an ordinary gas ieaterv or oven, &c., burning the same amount of gas. B this means, therefore, direct transmission o the heat to-a body to-be heated may be effected whether the body to-be heated be-l'ooated'out'side or inside the chamber.

In Fig. 4 the up er end of the BXPBHSiOIb ehamher is closed liy acap-or head '18, constituting an insulating air-space, in ordento prevent the heat from passing directly'upward. Int'his figure also the support tor-t; eburner and the expansion-chamber is formed of legs 19,011 which the laterally-extending portion of the plate 11 rests, gas being con-- noted to the unit ng-chamber through an inlet-pipe 20. The wider open the valveQl controlling the discharge-opening through the outlet 17 the greater should be the flow of gas to the burner. Proper manipulation requires that as this valve is turned to close" the opening the gas should be also gradually shutloii'. The movement in unison is eii'ert-- ed in this instance by connecting the-operating-stem 23 of the valve 21 with the gassup-- plyvalve-22, the said stem being squaredand engaging with'thefingers 24, rojeotin new washer 25, secured tothe peorat'ed'p ug'26 of the valve. p

Figs. 1, 2, 3, and 7' represent theaappiicm tion of. the --invention toa cooking stoye, &c.- the plate 11' bein r rovided with-'pot*-'sup-. porting lugs 15. n ig.7'ftirtheexpamsiom chamber of Fig. t there is substitutedthecasing 27 of sufficient diameter toenablethe cooking vessel QS to beplaced therein upon the lugs 15 of the plate-11. If desired, the casing may be surroundtdi with insulating tween the; upper'portionof the plate 11] andthelower surface of the vessel being heated constitutes an expansion-chamber (analomaterial, such 94529. In Fig. 3 the-space he- I gous to the.- expansion-chamber'already de scribed) from which the products ofcombos tion escape laterally outward, and" the; two may -be caused toapproach without inany way'atfecting the eliicieney of the burner in close rel'ationship, provideti space enough is tion.

79 become mixed with the hotproduots of coin- LIZ I sheet ofai r-is mam lln the operation of the burner gasand airare caused to flow through the inlet-portsinto. the burnersbody, forming an initial mixture.- luis initial mixture passes out of the burnerorifices andyis lighted, the flames passing thdpulgh the openings 10 in theplate ll', in-

rangement, esides producing complete com bustion ofthe gas, insures against the passage of an excess of air over and above that required for combustion through the openings 10 and into the region above the plate 11, 00-

cnpied by the hot products of combustion. Any; excess of air which'is alloWedto-enter this region and become mixed with the .hot products of combustion while the same are. in contact with the body being heated results in loss, in that such air absorbs and carries away heatfwhich would otherwise be transmitted directly to the body being heated.

Having described my invention,- I claim- 1. A burner comprising in combination, .a burnerbody provided with aburner-outlet orifice and having a gas inlet and an inlet through which an inflow of air is induced by the gas-fiow, and a plate located above and spaced apart from the burner-body having an opening registering with the burner-ori-' fice, whereby the space within said 0 ening between the walls thereofis traversed y the flame, and a flow of air iss'nduced upward from below the plate between the walls of the opening and the-side surfaces ofthe flame. 2. -A two-stepoxidation burner comprising in'combination, a burner-body provided with outlet-orifices and having air and gas inlets-whereby an initialmirrture in: th ef burner-body is effected, and" a, plate. above the burner-body provided with openings each in registerwithanoutletrorifice, each ofsaid ope s being of substantially the same configuratmn asbutof lar er area than each corresponding outlet o ee. whereby, a thin of air inthe orm' of thin sheet, and this thin lrdliidizeti and sheet of air of equal thickness may flow upward through each openingbetween the walls of theop mngland the sides of the partiallyurning mixture. v 3, Ina gas-burner, the combination 'of a burner-body provided with a topcover portion having a surface area" substantially equal to the horizontal cross-sectional area'of the burner-body, forming a mixing-chamber having inlet ports for gas and air, and aplu-' rality of bu1t1er-orifices in said top-cover portion, and a plate located above said top-cover portion having a plurality of openings each in register with a burner-orifice, forming an air space orfipassage between the opposing surfaces of said top-cover portion and said plate, and pot-supporting lugs on said plate.

mg in combination, a burner-body provided with a phi rality of elongated outlet-orifices and having in and gas inlets whereby an initial migrture in the burner-body-is effected, and .a plate located above and spaced apart from the burner-body provided with a plurality of elongated openings each in registerwith an elongated outlet orifice.

5. In an apparatus for burning gas, means for producing complete combustlon of the gas and for efiectingdirect transmission '-of the heat to'a hody to be heated, comprising,

the combination of ,a chamber having an outlet at its upper end and havingabottom ortion or plate provided'with a plurality o inlet-openings, and a burner of the Bunsen type located below and spaced apart from the bottomuplate provided with a plurality 4. A two-step-oxidation burner co1npris-' of burner-outlt'orxfices each of substantially the same configuration 'as,but of smaller area than each inlet-opening of the bottom plate, and each in register with a corresponding in-, let-open ng of saidbottom plate,substantially as shown and described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses JOHN H. ACKROYD. Witnesses:

PIERSON L. WELLs, CnAs. H. DAVIDS. 

